Finding the Third Proportional to 74,688 and 100,080

Step by Step Solution

1. Step 1: Write the proportion equation
   74,688 : 100,080 = 100,080 : x
2. Step 2: Convert to fraction form
   74,688/100,080 = 100,080/x
3. Step 3: Cross multiply
   74,688x = 100,080 × 100,080
4. Step 4: Simplify right side
   74,688x = 10,016,006,400
5. Step 5: Solve for x
   x = 10,016,006,400/74,688
6. Step 6: Final answer
   x = 134,104.63